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Consider the following program segment. Here R1, R2 and
R3 are the general purpose registers.
GATE 2007
Assume that the content of memory
location 3000 is 10 and the content of the
register R3 is 2000. The content of each of
the memory locations from 2000 to 2010 is
100. The program is loaded from the
memory location 1000. All the numbers are
in decimal.
Assume that the memory is word
addressable. The number of memory
references for accessing the data in
executing the program completely is:
Instruction
Instruct
ion size
(no. of
words)
Operation
MOV R1, (3000)
R1CM[3000]
N
LOOP:
MOV R2, (R3)
R24 M[R3]
1
ADD R2, R1
R24 R1 + R2
1
MOV (R3), R2
M[R3]++R2
1
INC R3
R366R3 + 1
1
47
R14 R1 - 1
1
DEC R1
Branch on not
2
BNZ LOOP
zero
1
HALT
Stop


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